Rice bran is a high-value by-product of rice milling, rich in oryzanol and other active compounds, but with poor stability.
After separation from rice, lipase is rapidly activated, causing a fast increase in free fatty acid (FFA) and quick quality deterioration.
Therefore, strict requirements are placed on front-end oilseed pretreatment in a rice bran oil processing plant and modern edible oil processing equipment line.
rice bran cleaning
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heat treatment
→
extrusion expansion
→
solvent extraction
As a key oilseed pretreatment step, it rapidly inactivates lipase under high temperature and pressure, while improving rice bran structure into a porous matrix, enhancing solvent penetration and mass transfer efficiency in the solvent extraction plant, and improving oil yield.
In the refining stage, vacuum low-temperature processing reduces loss of heat-sensitive compounds, better preserves oryzanol, and improves refined oil quality and added value.
In rice bran oil processing, controlling the “time window” is critical. QIE extrusion technology stabilizes raw material before deterioration, improving nutrient retention and overall oil recovery efficiency.
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